Arailroad handcar ismoving along straight, frictionless tracks with negligible airresistance. in the following cases, the car initially has a totalmass (car and contents) of 170 image for a railroad handcar ismoving along straight, frictionless tracks with negligible airresistance. in and is traveling east with a velocity ofmagnitude 4.60 m/s. find the final velocity of thecar in each case, assuming that the handcar does not leave thetracks.

a.)
an object with a mass of 22.0 image for a railroad handcar ismoving along straight, frictionless tracks with negligible airresistance. in is thrown sideways out of the car with a speedof 2.50 m/s relative to the car's initialvelocity.

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.